Va. Code Ann. § 3.2-1505

The Board, upon petition by at least 10 percent of the producers in the Commonwealth as determined by the Commissioner, shall provide for either a referendum on the continuation of the Cotton Board and the assessment on cotton by a maximum of $0.15 per bale. Any referendum held under this section shall be conducted in accordance with this chapter. The Board shall adopt regulations governing the conduct of referenda pursuant to § 3.2-112.